Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Hi, I'm new to electronics and I've been starting a project of my own which is a charger (since i though i should start first at power electronics since its all about electricity before pursuing switching electronics or automation). I had previously created a charging system (using the li-ion...
Hello everyone!
The title pretty much says it.
I'm using two heating elements to heat up a vessel of about 4 in^3 and this is the way I'm thinking about doing it. (senior ME student here so please easy with the jargon)
So here is the way I'm wiring the thingy:
The problem with this setup...
Having a problem finding the problem on the power supply board. The board turns on and off in a 2 hz pattern. Checked the input capacitors and they are all good and never drain even after remove the input supply. Tested all the mosfets and they check out good. Checked the opto isolators and...
What I have:
I am using a Teensy 3.2 microcontroller to operate 3 actuators. They are all 0-10VDC signal, and 0-24VAC power.
I am using a 24VDC power supply with a voltage divider to create a 10VDC rail on a breadboard.
Each of the actuators has its own MOSFET, which controls the exact signal...
this is the schematic ive built. Its designed to give an adjustable output of 35-50v, the question is which part do i have to change to make it work below 35v. I have this connected to a 24v transformer and all it gives out is 35v(no matter the pot position). I know this is very simple for some.
Since my first thread on this Forum a few months ago quite a lot has happened. Firstly I must thank spec for all is help and advice. He has the patience of a saint and can come down to the level of a moron.:):oops:
Secondly a slow realisation of what building a power supply means has occurred...
I pretend to build a power supply based on a 230v to 30v transformer, my power supply needs to have a 0v-30v variable output and also +15v, -15v and +5v fixed output, using preferably the LM117 to regulate the 0v-30v variable output. I will also need a second +5v output to connect a USB port and...
I have a 52V transformer that after rect. produces 3.3A at 52V. I wish to use either a LM317 or a LM338 with 2N3055 power transistors.
If you run 2N3055's in parallel you are suppose d to have a resistor like a 0.1Ohm 10W from each emitter so that thermal runaway doesn't take place.Surely the...
OK so I'm after a bit of wisdom here, I've built a portable power pack for camping, fishing, festivals etc and am struggling to understand the ah and how many charges I should be getting out of it etc so here's a couple of questions I was hoping you guys could help with . .
So its all wired up...
Hi so this is my first post to this site I do apologize if it has the wrong area I was given a basically what I think is a variable power supply, the terms for me getting this nice thing for free was the fact that it is old one and had been through a fire so it was not damaged however had smoke...
I got a high voltage regulator (Discrete using BJTs)..Attaching the circuit..would like to calculate the biasing values how its been arrived..the load at Q2A switch from 0 and 1.3A..If any one can help on theoretical calculation would be helpful
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